Treatment of urinary incontinence and other disorders by application of energy and drugs

ABSTRACT

The invention provides a method and system for treating disorders in parts of the body. A particular treatment can include on or more of, or some combination of: ablation, nerve modulation, three-dimensional tissue shaping, drug delivery, mapping stimulating, shrinking and reducing strain on structures by altering the geometry thereof and providing bulk to particularly defined regions. The particular body structures or tissues can include one or more of or some combination of region, including: the bladder, esophagus, vagina, penis, larynx, pharynx, aortic arch, abdominal aorta, thoracic, aorta, large intestine, sinus, auditory canal, uterus, vas deferens, trachea, and all associated sphincters. Types of energy that can be applied include radiofrequency, laser, microwave, infrared waves, ultrasound, or some combination thereof. Types of substances that can be applied include pharmaceutical agents such as analgesics, antibiotics, and anti-inflammatory drugs, bulking agents such as biologically non-reactive particles, cooling fluids, or dessicants such as liquid nitrogen for use in cryo-based treatments.

CROSS REFERENCE TO RELATED APPLICATIONS

This application is a division of U.S. patent application Ser. No.09/407,658, filed Sep. 28, 1999 now U.S. Pat. No. 6,692,490.

BACKGROUND OF THE INVENTION

1. Field of the Invention

This invention relates to treating body tissue, particularly to treatingbody tissue by altering the shape, density, relative geometry or tensionof that body tissue using energy or substances deployed from aninterstitial location in the body.

2. Related Art

Urinary incontinence results from a number of factors. Increasing age,injury from childbirth and related stresses can cause the relative toneof the bladder and accessory muscles to weaken, which, in turn, causesan impaired inability to retain urine. Weight gain and overalldeterioration of muscle tone can cause increased abdominal pressurewhich overcomes sphincter resistance. Nerve pathways that cause the“urge” to urinate can be hyperactive. The relative tension of theurethra can change with age, causing poor urinary control. Injury to thedetrusor muscles or to the trigone area also results in impaired urinarycontinence.

These factors do not usually occur by themselves. The typical patientusually presents with two or more of them. Therefore, it is desirable toprovide a treatment that can address many of these factors.

Given the complex etiology of varied causal factors, the ideal treatmentfor urinary incontinence requires a device that can perform manydifferent functions. For example, a treatment for female urinaryincontinence might rely upon some or all of the following:

(1) reshaping the bladder to alter the urethro-vesical angle andre-suspend the bladder neck, (2) manipulation of the detrusor muscles,(3) mapping and modulating nervous pathways responsible for urinaryurgency, (4) reducing strain on he bladder neck by changing thestructural geometry, (5) shrinking discrete and non-discrete areas ofthe bladder by creating thermal lesions, (6) three-dimensional modelingof tissue by adding bulk so as to achieve better closure, (7)strengthening the structure integrity of a tissue by providing a patternof scar tissue, and (8) application of pharmaceutical agents both as acurative and to promote healing post treatment.

The use of a catheter to apply radio frequency (RF) and other types ofenergy to ablate tissue in the body (such as heart muscle tissue) isknown in the art of cardiac treatment. However, known systems using RFand other types of energy are still subject to several drawbacks.

A first problem in the known art involves providing a device that canperform all of the aforementioned functions. While known systems canperform one or more of these functions, nothing in the related art iscapable of performing all of these functions. Patients are frequentlyrequired to return for multiple treatments until a cure is finallyeffected.

A second problem in the known art involves identification, modulationand/or stimulation of nerves in a targeted tissue. Known systems do notprovide for protection of sensitive nerves during treatment or allownerves during treatment or allow nerves to be identified and stimulated.This is particularly problematic because many tissue disorders,especially those involving tone or contractile ability of a sphincter,arise from afferent and efferent nerves are either under-stimulated orover-stimulated.

A third problem in the known art involves providing a treatment surfacethat can reach all of the desired treatment areas, such as the entiresurface of the detrusor muscles. While the use of a catheter to deployenergy is known, none is disposed to flexibility adapt to the interiorshape of an organ so as to provide optimal uniform treatment.

A fourth problem is the known art involves removal of tissue andsubstances used in treatment. Known systems do not provide for removalof excess substances used in treatment such as cooling fluids, collagenor bulking substances. Similarly, known systems do not provide forremoval of substances that hinder or otherwise obstructs the healingprocess such as pus, purulent discharges, suppuration and pockets ofinfection.

A fifth problem in the known art involves directing and positioning theelectrodes in the body cavity orifice. Difficulties in accuratelypositioning the electrodes in the target orifice detract from treatment.Frequently; unhealthy tissue remains untreated while healthy tissue iscompromised. Difficulties in directing and positioning the electrodesare particularly problematic because one of the goals of treatment is tominimize collateral damage to healthy tissue and to completely treatdiseased tissue.

A sixth problem in the known art involves minimizing thermal injury tothe patient. Some known systems rely upon simultaneous application ofenergy and infusion of a cooling liquid into the targeted area fortreatment. While such infusion of liquid minimizes thermal injury to thepatient, it is not applicable to all parts of the body. For example,infusion of cooling liquids into an internal body cavity such as abladder, uterus, or stomach can rupture the targeted organ or causeosmotic imbalance within the tissue.

A seventh problem in the known art involves difficulty in thesimultaneous use of complimentary technology. Known systems do notprovide for optimal, simultaneous use of auxiliary tools forvisualization, monitoring pH and pressure or drug administration.

An eighth problem in the known art is that it can be difficult to blockthe flow of body fluids and gases into an area of the body where tissueablation is taking place. Bodily fluids can dissipate and detrimentallyabsorb the energy to be applied to the tissue to be ablated. Dissipationof bodily fluids detracts from the goal of treatment of diseased tissue.

Accordingly, it would be advantageous to provide a method and apparatusfor treatment or body structures, especially internal body structuresinvolving unwanted features or other disorders, that does not requirerelatively invasive surgery, and is not subject to other drawbacks notedwith regard to the known art. This advantage is achieved in anembodiment of the invention in which a relatively minimally invasivecatheter is inserted into a body, a variety of different treatments ofthe body structures is applied using electrodes and a cooling element,and the unwanted features or disorders are relatively cured.

SUMMARY OF THE INVENTION

The invention provides a method and system for treating disorders of thegenitourinary tract and other disorders in other parts of the body. Aparticular treatment can include one or more of, or some combination ofablation, nerve modulation, three-dimensional tissue shaping, drugdelivery, mapping, stimulating, shrinking (by creation of a pattern ofthermal lesions) and reducing strain on structures by altering thegeometry thereof and providing bulk to particularly defined regions.

The particular body structures or tissues can include one or more of, orsome combination of regions, including the bladder, esophagus, vagina,penis, larynx, pharynx, aortic arch, abdominal aorta, thoracic aorta,large intestine, small intestine, sinus, auditory canal, uterus, vasdeferens, trachea and all associated sphincters.

In one aspect of the invention, a catheter is deployed in the body. Itmay enter the body via orifice, a stoma, or surgically created openingthat is made for the purpose of inserting the catheter. Insertion may befacilitated with the use of a guide or wire or a generic supportstructure or visualization apparatus.

In a second aspect of the invention, the treatment can includeapplication of energy and substances to effect changes in the targettissue. Types of energy that can be applied include radio frequency,laser, microwave, infrared waves, ultrasound or some combinationthereof. Types of substances that can be applied include pharmaceuticalagents such as analgesics, antibiotics and anti-inflammatory drugs,bulking agents such as biologically nonreactive particles, coolingfluids, and dessicants such as liquid nitrogen for use in cryo-basedtreatments.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a block drawing of a system for treatment of female urinaryincontinence using a first device;

FIG. 2 is a process flow drawing of a method for treatment of femaleincontinence using a first device;

FIG. 3 is a block drawing of a system for treatment of female urinaryincontinence using a second device;

FIG. 4 is a process flow drawing of a method for treatment of femaleurinary incontinence using a second device;

FIG. 5 is a block drawing of system for treatment of female urinaryincontinence using a third device; and

FIG. 6 is a flow drawing of a method for treatment of female urinaryincontinence using a third device.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

In the following description, a preferred embodiment of the invention isdescribed with regard to referred process steps and data structures.Embodiments of the invention can be implemented using general-purposeprocessors or special purpose processors operating under programcontrol, or other circuits, adapted to particular process steps and datastructures described herein. Implementation of the process steps anddata structures described herein would not require undue experimentationor further invention.

System Elements

FIG. 1 is block drawing of a system for treatment of female urinaryincontinence using a first device.

A system 100 includes a catheter 110, a treatment element 114, a controlassembly 130 and a shielding element 140. In an alternate embodiment,the shielding element 140 is not present.

The Catheter

The catheter 110 includes a distal segment 111 and a proximal segment112. The distal segment 111 and the proximal segment 112 form onecontinuous piece. Two or more lumens 113 run the entire length of thecatheter 110 and are coupled to control assembly 130. It is throughthese lumens 113 that energy is conducted and flowable substances areexuded.

The distal segment 111 includes a treatment element 114 and a taperedtip 115. In a preferred embodiment, the tapered tip 115 is rigid so asto allow easy insertion into a urethra. In other preferred embodiments,the tapered tip 115 may be of varying degrees of flexibility dependingwhere it is in the body it is deployed. In alternative embodiments, thecatheter 110 may be introduced into the target tissue using anintroducer sheath 116 or guide wire 117 (not shown). The most distal endof the tapered tip 115 includes an aperture 118. Substances that flowthrough the lumens 113 may be applied to the tissue through thisaperture 118.

In the preferred embodiment, the distal segment 111 is disposed forinsertion into a cavity of the body such as a female urethra andbladder. In alternative embodiments, the cavity may include one or moreof, or some combination of the following:

-   -   any portion of the bronchial system, the cardiovascular system,        the genito-urinary tract, the lymphatic system, the pulmonary        system, the vascular system, the locomotor system, the        reproductive system or other systems in the body; any biological        conduit or tube, such as a biologic lumen that is patent or one        that is subject to a stricture;    -   any biologic operational structure, such as a gland, or a muscle        or other organ (such as the colon, the diaphragm, the heart, a        uterus, a kidney, a lung, the rectum an involuntary or voluntary        sphincter);    -   any biologic structure, such as a herniated body structure, a        set of diseased cells, a set of dysplastic cells, a surface of a        body structure, (such as the sclera) a tumor, or a layer of        cells (such as fat muscle or skin); and    -   any biologic cavity or space or the contents thereof, such as a        cyst, a gland, a sinus, a layered structure, or a medical device        implanted or inserted into the body.        The Treatment Element

The treatment element 114 includes a set of curvilinear electrodes 119and three sets of irrigation and aspiration ports 124.

The electrode 119 contained in the set of electrodes are evenly spacedaround the tapered tip 115. Each electrode 119 includes a metallic tube120 defining a hollow lumen 121 and is disposed so that it curves awayfrom the tapered tip 115 and has a barbed end, much like a fishhook.Being arced in this direction allows the device to be inserted easilyinto an orifice without causing unintended tissue damage. Once thedevice is inserted, the barbed ends of electrodes 119 grab the tissue ofthe bladder neck and upper urethra in a claw-like manner and bunch ittogether. Energy is delivered through the electrodes to the bunchedtissue, causing shrinkage to occur in the area surrounding the treatmentelement 114. This three dimensional shaping improves continence byimproving the structural integrity of the tissue.

In a preferred embodiment, there are four electrodes 119. Otherpreferred embodiments may have more or less than four electrodes. Eachelectrode 119 is coupled to at least one sensor 122 capable of measuringsuch factors as temperature, conductivity, pressure, impedance and othervariables. In a preferred embodiment, each electrode is also coupled toa radiopaque marker 123 for use in fluoroscopic visualization.

In a preferred embodiment, the electrodes 119 can be operated separatelyor in combination with each other as sequences of electrodes disposed inarrays. Treatment can be directed at a single area or several differentareas of a bladder or other orifice by operation of selectiveelectrodes. Different patterns of submucosal lesions, mucosal lesions,ablated, bulked, plumped, desiccated or necrotic regions can be createdby selectively operating different electrodes. Production of differentpatterns of treatment makes it possible to remodel tissues and altertheir overall geometry with respect to each other.

Each electrode 119 can be disposed to treat tissue by delivering one ormore of, or some combination or any of the following in either aunipolar or bipolar mode:

-   -   Radiofrequency (RF) energy, such as RF in about the 300        kilohertz to 500 kilohertz range;    -   Chemical treatments, such as acids, antibiotics enzymes,        radioactive tracers or other bioactive substances;    -   Infrared energy, such as from an infrared laser or diode laser;    -   Microwave energy, such as electromagnetic energy in about the        915 megahertz or 2.45 gigahertz range;    -   Sonic energy, including ultrasound;    -   Photodynamic therapy (PDT)    -   Non-infrared laser energy    -   Cryothermia

In addition to treating tissues by delivering energy, the set ofelectrodes 119 are disposed to delivery at least one flowable substanceto the area of the body where treatment is to take place. In a preferredembodiment, the flowable substance includes water which aids in coolingof body structures during RF application. However, in alternativeembodiments, the deliverable flowable liquids include other substances,including saline, anesthetic drugs, anti-inflammatory agents,chemotherapeutic agents, systemic or topical antibiotics, collagen andradioactive substances such as labeled tracers. In one alternativeembodiment, saline is used to increate the local conductivity of tissue,enhancing the penetration of RF energy so as to create larger lesions.The saline can be delivered through the needle submucosally so as toachieve greatest effect.

Three rings of irrigation and aspiration ports 124 circle the distal endof the catheter 110. Each ring contains numerous irrigation andaspiration ports 124, evenly distributed around the width of thecatheter. One ring of irrigation and aspiration ports 124 lies betweenthe aperture 118 and the set of electrodes 119; the other two rings ofirrigation and aspiration ports 124 are located on the proximal side ofthe electrodes 119. Application of positive pressure makes irrigationand cooling of tissues is possible. Alternatively, application ofnegative pressure causes the tissue to be uniformly conformed around thetreatment element 114, thereby achieving the most optimal therapeuticvalue of the energy and substances.

The Control Assembly 130

The control assembly 130 includes a visualization port 131, an apparatusport 132, an electrical energy port 133, an electrode selection andcontrol switch 134, one or more irrigation and aspiration control ports135, an therapeutic energy port 136 and a handle 137.

The visualization port 131 can be coupled to visualization apparatus,such as fiberoptic device, flouroscopic device, an oscope, a laparoscopeor other type of catheter.

The apparatus port 132 can be coupled to other medical devices that maybe useful during treatment such as a pH meter, a pressure monitor, drugadministration apparatus, or other device used to monitor or treat thepatient.

In a preferred embodiment, devices coupled to both the visualizationport 131 and the apparatus ports 132 are controlled from a locationoutside the body, such ss by an instrument in an operating room or anexternal device for manipulating the inserted catheter 110.

In an alternative embodiment the apparatus port 132 may be coupled todevices that are implanted or inserted into the body during a medicalprocedure. For example, the apparatus port 132 may be coupled to aprogrammed AICD (artificial implanted cardiac defibrillator), aprogrammed glandular substitute (such as an artificial pancreas) orother device for use during surgery or other medical procedures.

The electrical energy port 133 includes conductive element such as anelectrical adapter that can be coupled to a source of alternating ordirect current such as a wall socket, battery or generator.

The electrode section and control switch 134 includes an element that isdisposed to select and activate individual electrodes 119.

The irrigation and aspiration control ports 135 can be coupled to a pumpor other apparatus to deliver fluid through the aperture 118 or applysuction through the set of irrigation and aspiration ports 134.

The therapeutic energy port 136 includes a receptor port for coupling toa source of any of the following types of therapeutic energy:

-   -   radiofrequency (RF) energy, such as RF in about the 300        kilohertz to 500 kilohertz range;    -   chemical treatments, such s acids, antibiotics, enzymes,        radioactive tracers or other bioactive substances;    -   infrared energy, such as from an infrared laser or diode laser;    -   microwave energy, such as electromagnetic energy in about the        915 megahertz or 2.45 gigahertz range;    -   sonic energy, including utrasound;    -   photodynamic therapy (PDT);    -   non-infrared laser energy; and    -   cryothermia

The handle 137 is disposed for manipulation by medical or veterinarypersonnel and can be shaped for being held in the hand. Thevisualization port 131, the apparatus port 132, the electrical energyport 133, the electrode selection and control switch 134 and the one ormore irrigation and aspiration control ports 135 and the therapeuticenergy port 136 are all mounted in the handle 137 to allow for easyoperation.

The Shielding Element

The shielding element 140 lies on the proximal side of treatment element114 and is disposed to isolate the treatment area. It can also helpposition the catheter 110 in the body. For example, in a preferredembodiment in which the catheter 110 is inserted into the urethra, theshielding element 140 can prevent the catheter 110 from being insertedfurther into the urethral canal and prevent substances used in treatmentfrom escaping. In an alternative embodiment, the shield element 140 isoptional.

FIG. 2 is a process flow drawing of a method for treatment of femaleurinary incontinence using a first device.

A method 200 is performed by a system 100, including a catheter 110 anda control assembly 140. Although the method 200 is described serially,the steps of the method 200 can be performed by separate elements inconjunction or in parallel, whether asynchronously, in a pipelinedmanner, or otherwise. There is no particular requirement that the method200 be performed in the same order in which this description lists thesteps, except where so indicated.

At a flow point 200, electrical energy port 133 is coupled to a sourceof electrical energy. The patient has voided and is positioned on atreatment table, in an appropriate position such as horizontal,jackknife or lithotomy. Due to the potential for inducing pain, the areasurrounding the urinary meatus may be pretreated with a topicalanesthetic before insertion of the catheter 110; depending upon thecircumstances, a muscle relaxant or short term tranquilizer my beindicated. The position of the patient and choice of pharmaceuticalagents to be used are responsive to judgments by medical personnel.

At a step 201, the patient's external genitalia and surrounding anatomyare cleansed with an appropriate agent such as BETADINE, or benzalkoniumchloride.

At a step 202, the visualization port 131 is coupled to the appropriatevisualization apparatus, such as a fluoroscope, an endoscope, a displayscreen or other visualization device. The choice of visualizationapparatus is responsive to judgments by medical personnel.

At a step 203, the apparatus port 132 is coupled to an external medicaldevice such as a pH meter, a pressure gauge, or other such equipment.The choice of apparatus is responsive to judgments by medical personnel.

At a step 204, the therapeutic energy port 136 is coupled to a source ofany of the aforementioned types of therapeutic energy.

At a step 205, the tapered tip 115 is well lubricated and introducedinto the urethral meatus in an upward and backward direction, in muchthe same way a Foley catheter 110 is introduced.

In a step 206, the catheter 110 is threaded through the urethra untilthe treatment element 114 is at the further reaches of the trigoneregion. An introducer sheath 116 or guidewire 117 may also be used tofacilitate insertion.

In a step 207, the position of the catheter 110 is checked usingvisualization apparatus coupled to the visualization port 131. Theposition of the treatment element 114 is adjusted, if necessary, so thatthe electrodes 119 have grabbed onto the tissue and are bunching ittogether. This apparatus can be continually monitored by medicalprofessionals throughout the procedure.

In a step 208, irrigation and aspiration control port 135 is manipulatedso as to exude a cooling liquid such as sterile water, saline orglycerin from the aperture 118 into the lower region of the bladder.This cooling fluid lowers the relative temperature of the targetedtissues and prevents collateral thermal damage. In alternativeembodiments, other devices may be coupled to the apparatus port 132 tochill the cooling fluid or to cause sonic cooling, gas expansion,magnetic cooling or others cooling methodologies. The choice of coolingfluid or methodology is responsive to judgments by medical personnel.

In a step 209, electrodes 119 are selected using the electrode selectionand control switch 134. In a preferred embodiment, all electrodes aredeployed at once. In another preferred embodiment, electrodes may beindividually selected. This step may be repeated at any time prior tostep 217.

In a step 210, suction apparatus is coupled to the irrigation andaspiration control ports 135 so that suction may be effected through theirrigation and aspiration ports 124. The tissue surrounding thetreatment element 114 may be aspirated so as to conform it to thetreatment element 114. The aspiration also removes excess cooling fluidthat was supplied in step 209.

In a step 211, the therapeutic energy port 136 is manipulated so as tocause a release of energy from the electrodes 119. The duration andfrequency of energy are responsive to judgments by medical personnel.This release of energy creates a pattern of lesions in the mucosal andsub-mucosal tissues of the trigone region. The affected area shrinks andis relatively strengthened, so as to better retain urine. Alternatively,a different method of treatment can be affected by partially orcompletely ablating nerves responsible for the sensation of urinaryurgency.

In a step 212, the catheter 110 is repositioned so that the treatmentelement 114 is closer to the bladder neck. Prior to repositioning thecatheter 110, the electrodes 119 are either retracted or covered by theintroducer sheath 116 to prevent unintended damage to tissue while thecatheter is being moved.

In a step 213, the energy port 137 is manipulated so as to cause arelease of energy from the electrodes 119. The duration and frequency ofenergy are responsive to judgments by medical personnel. This release ofenergy creates another pattern of lesions in the mucosal and sub-mucosaltissues of the trigone area. The affected tissue shrinks and isrelatively strengthened, so as to better retain urine. By creating aselective pattern of lesions in various areas as in steps 211 and 115,the three-dimensional modeling of the trigone area can be affected.Alternatively, a different method of treatment can be effected bypartially or completely ablating nerves responsible for the sensation ofurinary urgency.

In a step 214, the catheter 110 is re-positioned for a final time sothat the treatment element 114 is immediately adjacent to the bladderneck. Prior to repositioning the catheter 110, the electrodes 119 areeither retracted or covered by the introducer sheath 116 to preventunintended damage to tissue while the catheter is being removed.

In a step 215, the energy port 137 is manipulated so as to cause arelease of energy from the electrodes 119. The duration and frequency ofenergy are responsive to judgments by medical personnel. This release ofenergy creates another pattern of lesions in the sub-mucosal and mucosaltissues around the bladder neck. The affected tissue shrinks and isrelatively strengthened, so as to better retain urine. Taken togetherwith the lesions, created in step 211, and 213, the trigone area hasbeen completely remodeled so that the bladder has shrunk andre-suspended itself. The relative pressure on the bladder neck isrelieved. The scar tissue created by application of the energy isstronger and better able to resist abdominal pressure on the sphincter.

In a step 216, the irrigation and aspiration control port 135 ismanipulated so as to stop the flow of cooling liquid from the aperture118.

In a step 217, pharmaceutical agents may be locally administered bymanipulating the irrigation and aspiration control ports 135. Theseagents may include lubricants, anesthetics, anti-spasmodics,anti-inflammatories, antibiotics or other agents as deemed appropriateby the judgment of medical personal. This step may occur any time priorto withdrawal of the catheter 110, to either pre-treat tissue or posttreat tissues.

In a step 218, the catheter 110 is withdrawn from the urethra.

FIG. 3 is a block drawing of a system for treatment of female urinaryincontinence using a second device.

A system 300 includes a catheter 310, a microporous treatment balloon320, a control assembly 330, and a shielding element 340 (not shown). Inan alternative embodiment, the shielding element 340 is not present.

The Catheter 310

The catheter 310 includes two or more lumens 311 (not shown) and atranslation member 312. The two or more lumens 311 and translationmember 312 traverse the entire interior length of the catheter 310. Thecatheter 310 and lumens 311 are coupled at a distal end to a treatmentballoon 320; they are coupled at a proximal end to a control assembly330. The translation member 312 is coupled to the distal end of thetreatment balloon 320; it is coupled at the proximal end to a controlassembly 330.

In a preferred embodiment, the catheter 310 and treatment balloon 320are introduced into cavity of the body, such as a female urethra andbladder using an introducer sheath 313 or a guide tube 314. Inalternative embodiments, the cavity may include one or more of, or somecombination of the following:

-   -   any portion of the bronchial system, the cardiovascular system,        the genito-urinary tract, the lymphatic system, the pulmonary        system, the vascular system, the locomotor system, the        reproductive system or other systems in the body;    -   any biological conduit or tube, such as a biologic lumen that is        patent or one that is subject to a stricture;    -   any biologic operational structure, such as a gland, or a muscle        or other organ (such as the colon, the diaphragm, the heart, a        uterus, a kidney, a lung, the rectum, an involuntary or        voluntary sphincter);    -   any biologic structure, such as a herniated body structure, a        set of diseased cells, a set of dysplastic cells, a surface of a        body structure, (such as the sclera) a tumor, or a layer of        cells (such as fat, muscle or skin); and    -   any biologic cavity or space or the contents thereof, such as a        cyst, a gland, a sinus, a layered structure, or a medical device        implanted or inserted in the body.        The Microporous Treatment Balloon 320

The microporous treatment balloon 320 is comprised of a relativelyflexible and heat resistant material such as Kevlar, polyurethane,polyvinyl chloride (PVC), polyamide, PET, nylon or other materials. Theshape of the balloon can be manipulated by varying the degree ofinflation and the amount of tension placed on the translation member312. By varying the degree of inflation and the tension on thetranslation member, the surface of the treatment balloon can be broughtin contact with the entire interior surface of the muscles, includingthe detrusor muscles and the top of the bladder. In this way, it ispossible to treat the entire organ simultaneously.

The treatment balloon 320 also includes a flexible basket-like structure321 and a set of surface electrodes 322. The basket-like structure 321has horizontal and vertical members that completely encompass theballoon 320. The set of surface electrodes 322 are evenly distributed onall the members of the basket-like structure 321. Each electrode 322includes a sensor 323 to measure temperature, pressure, impedance, flow,nervous activity, pH, conductivity or other property of the tissue ortreatment. Each surface electrode 322 is also coupled to a radiopaquemarker 324 for use in fluoroscopic visualization.

In an alternative embodiment, the surface electrodes 322 and sensors 323are embedded directly into the exterior surface of the microporoustreatment balloon 320. In this preferred embodiment, the basket-likestructure 321 is optional.

In both the preferred and alternative embodiments, the electrodes 322can be operated separately or in combination with each other. Treatmentcan be directed at a single area, several different areas, or the entireinterior of a bladder or other orifice by operation of selectiveelectrodes. Different patterns of sub-mucosal lesions, mucosal lesions,ablated, bulked or plumped, desiccated or necrotic regions can becreated by selectively operating different electrodes. Production ofdifferent patterns of treatment makes it possible to remodel tissues andalter their overall geometry with respect to each other.

Each electrode 322 can be disposed to treat tissue by delivering one ormore of, or some combination or any of the following in either aunipolar or bipolar mode:

-   -   radiofrequency (RF) energy, such as RF in about the 300        kilohertz to 500 kilohertz range;    -   chemical treatments, such as acids, antibiotics, enzymes,        radioactive tracers or other bioactive substances;    -   infrared energy, such as from an infrared laser or diode laser;    -   microwave energy, such as electromagnetic energy in about the        915 megahertz or 2.45 gigahertz range;    -   sonic energy, including ultrasound;    -   photodynamic therapy (PDT);    -   non-infrared laser energy; and    -   cryothermia

In addition to treating tissues by delivering energy, the set ofelectrodes 322 and the micropores in the balloon 320 are disposed todeliver at least one flowable substance to the area of the body wheretreatment is to take place. In a preferred embodiment, the flowablesubstance includes sterile water, which aids in cooling and hydration ofbody structures. In other preferred embodiments, the flowable substanceincludes saline with a concentration of less than about 10% NaCl, whichlocally enhances tissue conductivity, resulting in selective areas ofablation or creation of thermal lesions at or below the surface of thetissue. However, in alternative embodiments, the deliverable flowableliquids include other substances, including anesthetic drugs,anti-inflammatory agents, chemotherapeutic agents, systemic or topicalantibiotics, collagen and radioactive substances such as labeledtracers. In other alternative embodiments, the sensors on the electrodesare used for mapping the foci or pathways of electrical activity in thebladder, the bladder neck or urethra. This information is used to guidedelivery of energy.

In other alternative embodiments, the balloon 320 is not microporous. Inthis alternative embodiment, electrodes 322 or other energy deliverydevices may be mounted upon or proximate to a surface of the balloon.

The Control Assembly 330

The control assembly 330 includes a visualization port 331, an apparatusport 332, an electrical energy port 333, an electrode selection andcontrol switch 334, one or more irrigation and aspiration control ports335, an therapeutic energy port 336 and a handle 337.

The visualization port 331 can be coupled to visualization apparatus,such as a fiber optic device, a fluoroscopic device, an anoscope, alaparoscope, an endoscope or other type of catheter.

The apparatus port 332 can be coupled to other medical devices that maybe useful during treatment such as a pH meter, a pressure monitor, drugadministration apparatus, or other devices used to monitor or treat thepatient.

In a preferred embodiment, devices coupled to both the visualizationport 331 and the apparatus ports 332 are controlled from a locationoutside the body, such as by an instrument in an operating room or anexternal device for manipulating the inserted catheter 310.

In an alternative embodiment the apparatus port 332 may be coupled todevices that are implanted or inserted into the body during a medicalprocedure. For example, the apparatus port 332 may be coupled to aprogrammed AICD (artificial implanted cardiac defibrillator), aprogrammed glandular substitute (such as an artificial pancreas) orother device for use dozing surgery or other medical procedures.

The electrical energy port 333 includes a conductive element such as anelectrical adapter that can be coupled to a source of alternating ordirect current such as a wall socket, battery or generator.

The electrode selection and control switch 334 includes an element thatis disposed to select and activate individual electrodes 322.

The irrigation and aspiration control ports 335 can be coupled to a pumpor other apparatus to inflate or deflate the balloon and deliver fluidsthrough the micropores of the treatment balloon 320.

The therapeutic energy port 336 includes a receptor port for coupling toa source of any of the following types of therapeutic energy:

-   -   radio frequency (RF) energy, such as RF in about the 300        kilohertz to 500 kilohertz range;    -   chemical treatments, such as acids, antibiotics, enzymes,        radioactive tracers or other bioactive substances;    -   infrared energy, such as from an infrared laser or diode laser;        microwave energy, such as electromagnetic energy in about the        915 megahertz or 2.45 gigahertz range;    -   sonic energy, including ultrasound;    -   photodynamic therapy (PDT);    -   non-infrared laser energy; and    -   cryothermia

The handle 337 is disposed for manipulated by medical or veterinarypersonnel and can be shaped for being held in the hand. Thevisualization port 331, the apparatus port 332, the electrical energyport 333, the electrode selection and control switch 334 and the one ormore irrigation and aspiration control ports 335 and the therapeuticenergy port 336 are all mounted in the handle 337 to allow for easyoperation.

The Shielding Element 340

The shielding element 340 lies on the proximal side of the microporoustreatment balloon 320 and is disposed to isolate the treatment area. Itcan also help position the catheter 310 in the body. For example, in apreferred embodiment in which the catheter 310 is inserted into theurethra, the shielding element 340 can prevent the catheter 310 frombeing inserted further into the urethral canal or bladder and preventsubstances used in treatment from escaping. In an alternativeembodiment, the shielding element 340 is optional.

FIG. 4 is a process flow drawing of a method for treatment of femaleurinary incontinence using a second device.

A method 400 is performed by a system 300 including a catheter 310, atreatment balloon 320 and a control assembly 330. Although the method400 is described serially, the steps of the method 400 can be performedby separate elements in conjunction or in parallel, whetherasynchronously, in a pipelined manner, or otherwise. There is noparticular requirement that the method 400 be performed in the sameorder in which this description lists the steps, except where soindicated.

At a flow point 400, electrical energy port 333 is coupled to a sourceof electrical energy. The patient has voided and is positioned on atreatment table, in an appropriate position such as horizontal,jackknife or lithotomy. Due to the potential for inducing pain, the areasurrounding the urinary meatus may be pretreated with a topicalanesthetic before insertion of the catheter 310; depending upon thecircumstances, a muscle relaxant or short term tranquilizer may beindicated. The position of the patient and choice of pharmaceuticalagents to be used are responsive to judgments by medical personnel.

At a step 401, the patient's external genitalia and surrounding anatomyare cleansed with an appropriate agent such as BETADINE, or benzalkoniumchloride.

At a step 402, the visualization port 431 is coupled to the appropriatevisualization apparatus, such as a fluoroscope, an endoscope, a displayscreen or other visualization device. The choice of visualizationapparatus is responsive to judgments by medical personnel.

At a step 403, the apparatus port 332 is coupled to an external medicaldevice such as a pH meter, a pressure gauge, or other medical equipment.The choice of apparatus is responsive to judgments by medical personnel.

At a step 404, the therapeutic energy port 336 is coupled to a source ofany of the aforementioned types of therapeutic energy.

In a step 405, suction, inflation or fluid infusion apparatus is coupledto the irrigation and aspiration control ports 335 so that the treatmentballoon may be later be inflated and deflated and substances may beadministered.

At a step 406, the most distal end of the treatment balloon 320 islubricated and introduced into the urethral meatus in an upward andbackward direction, in much the same way a Foley catheter is introduced.The choice of lubricant is responsive to judgments by medical personnel.In a preferred embodiment, the balloon 320 is completely deflated duringinsertion.

In a step 407, the catheter 310 is threaded through the urethra untilthe microporous balloon 320 has completely passed the bladder neck andis entirely in the bladder. An introducer sheath 313 or guide tube 314may also be used to facilitate insertion.

In a step 408, the position of the catheter 310 is checked usingvisualization apparatus coupled to the visualization port 331. Thisapparatus can be continually monitored by medical professionalsthroughout the procedure.

In a step 409, the irrigation and aspiration control port 335 ismanipulated so as to inflate the microporous treatment balloon 320. In apreferred embodiment, the treatment balloon 320 is inflated with acooling liquid such as sterile water, saline or glycerin. This coolingfluid lowers the relative temperature of the targeted tissues that arein physical contact and prevents collateral thermal damage. Inalternative embodiments, other devices may be coupled to the apparatusport 132 to chill the cooling fluid or cause sonic cooling, gasexpansion, magnetic cooling or others cooling methodologies. The choiceof cooling fluid or methodology is responsive to judgments by medicalpersonnel.

In a step 410, electrodes 322 are selected using the electrode selectionand control switch 334.

In a step 411, the translation member 312 is manipulated to alter theshape of the most distal end of the balloon so as to bring the distalend of the balloon in optimal physical contact with the top of thebladder.

In a step 412, individual nerves within the bladder are identified usingsensors 323. This step is optional.

In a step 413, the therapeutic energy port 336 is manipulated so as tocause a release of energy from the electrodes 322. The duration andfrequency of energy are responsive to judgments by medical personnel.This release of energy creates a pattern of lesions in the mucosal orsub-mucosal tissues of the bladder or portions thereof. The affectedarea shrinks and is relatively strengthened, so as to better retainurine.

In a step 414, the therapeutic energy port 336 is manipulated, so as tocause a release of energy from the electrodes 322 that is directed atthe nerves that were identified in step 412. Manipulation and modulationof these nerves may directly or indirectly affect incontinence relatedto an uncontrolled urge to urinate. This step is optional.

In a step 415, bulking agents such as organic microspheres, collagens,silicone, PVC and other organic breathable and unbreathable polymers areexuded from selected electrodes 322 positioned near the base of thebladder. The type of microspheres and bulking substances and thelocations where they are exuded are responsive to judgment by medicalpersonnel. These bulking agents can be used to strengthen thesestructures so as to prevent incontinence caused by stress.

In a step 416, pharmaceutical agents may be locally administered bymanipulating the irrigation and aspiration control ports 335. Theseagents may help include lubricants, anesthetics, anti-spasmodics,anti-inflammatories, antibiotics or other agents as deemed appropriateby the judgment of medical personal. This step may occur any time priorto withdrawal of the catheter 310, to either pre-treat tissue orpost-treat tissues.

In a step 417, the irrigation and aspiration control port 335 ismanipulated so as to reverse the flow of cooling liquid into themicroporous treatment balloon 320 and cause it to deflate.

In a step 418, the catheter 310 is withdrawn from the urethra.

FIG. 5 is a block drawing of a system for treatment of female urinaryincontinence using a third device.

A system 500 includes a catheter 510, treatment element 520, a controlassembly 530 and a shielding element 540. In an alternative embodiment,the shielding element 540 is not present.

The Catheter 510

The catheter 510 includes two or more lumens 511, a translation member512 and a tapered tip 513. The lumens 511 and translation member 512 runthe entire interior length of the catheter 510. The proximal end of thelumens 511 is coupled to the control assembly 530; the distal end of thelumens 511 is coupled to the treatment element 520. It is through theselumens 511 that energy is conducted and flowable substances are exuded.The proximal end of the translation member 512 is coupled to the controlassembly 530; the distal end of the translation member 512 is coupled tothe taper tip 513.

In a preferred embodiment, the tapered tip 513 is rigid so as to alloweasy insertion into a urethra. In other preferred embodiments, thetapered tip 513 may be of varying degrees of flexibility depending whereit in the body it is deployed. In alternative embodiments, the catheter510 may be introduced into the target tissue using an introducer sheath514 or a guide wire 515.

Ina preferred embodiment, the tapered tip 513 is disposed for insertioninto a cavity of the body such as a female urethra and bladder. Inalternative embodiments, the cavity may include one or more of, or somecombination of the following:

-   -   any portion of the bronchial system, the cardiovascular system,        the genito-urinary tract, the lymphatic system, the pulmonary        system, the vascular system, the locomotor system, the        reproductive system or other systems in the body;    -   any biological conduit or tube, such as a biologic lumen that is        patent or one that is subject to a stricture;    -   any biologic operational structure, such as a gland, or a muscle        or other organ (such as the colon, the diaphragm, the heart, a        uterus, a kidney, a lung, the rectum and or voluntary        sphincter);    -   any biologic structure, such as a herniated body structure, a        set of diseased cells, a set of dysplastic cells, a surface of a        body structure, (such as the sclera) a tumor, or a layer of        cells (such as fat, muscle or skin); and    -   any biologic cavity or space or the contents thereof, such as a        cyst, a gland, a sinus, a layered structure, or a medical device        implanted or inserted in the body.        The Treatment Element 520

The treatment element 520 includes a set of umbrella-like struts 521, aset of electrodes 522, a set of irrigation and aspiration ports 525 anda set of sensors 526. The set of umbrella-like struts 521 are severalcentimeters long. One end of the struts 521 is not attached to any partof the device. The other end of the strut 521 is coupled to the distalend of the translation member 512 at the tapered tip 513 in such a waythat when tension is applied to the proximal end of the translationmember 512, the umbrella-like struts 521 open up in much the same way asan umbrella.

A set of electrodes 522 is evenly distributed on the outer surface ofeach strut 521. Each free-floating end of a strut 521 includes at leastone electrode 522. Each electrode 522 includes a metallic tube 523defining a hollow lumen 524. In a preferred embodiment, the set ofelectrodes 522 are needle electrodes; other preferred embodimentsinclude surface electrodes or a combination of needle electrodes andsurface electrodes.

Each electrode 522 is coupled to at least one sensor 526 capable ofmeasuring such factors as temperature, conductivity, pressure, impedanceand other variables. In a preferred embodiment, each electrode 522 isalso coupled to a radiopaque marker 527 for use in fluoroscopicvisualization.

In a preferred embodiment, the electrodes 522 can be operated separatelyor in combination with each other. Treatment can be directed at a singlearea or several different areas of a bladder or other orifice byoperation of selected electrodes. Different patterns of sub-mucosallesions, mucosal lesions, ablated, bulked, plumped, desiccated ornecrotic regions can be created by selectively operating differentelectrodes. Production of different patterns of treatment makes itpossible to remodel tissues and alter their overall geometry withrespect to each other.

Each electrode 522 can be disposed to treat tissue by delivering one ormore of, or some combination or any of the following in either aunipolar or bipolar mode:

-   -   radiofrequency (RF) energy, such as RF in about the 300        kilohertz to 500 kilohertz range;    -   chemical treatments, such as acids, antibiotics, enzymes,        radioactive tracers or other bioactive substances;    -   infrared energy, such as from an infrared laser or diode laser;    -   microwave energy, such as electromagnetic energy in about the        915 megahertz or 2.45 gigahertz range;    -   sonic energy, including ultrasound;    -   photodynamic therapy (PDT)    -   non-infrared laser energy; and    -   cryothermia

In addition to treating tissues by delivering energy, the set ofelectrodes 522 are disposed to deliver at least one flowable substanceto the area of the body where treatment is to take place. In a preferredembodiment, the flowable substance includes sterile water which aides incooling and hydration of body structures. In another preferredembodiment, the flowable substance includes saline with a concentrationof less than about 10% NaCl. Saline is used to increate the localconductivity of tissue, enhancing the penetration of RF energy so as tocreate larger lesions. The saline can be delivered through the needleelectrode sub-mucosally so as to achieve greatest effect. However, inalternative embodiments, the deliverable flowable liquids include othersubstances, including anesthetic drugs, antiinflammatory agents,chemotherapeutic agents, systemic or topical antibiotics, collagen andradioactive substances such as labeled tracers.

A set of irrigation and aspiration ports 525 are also evenly distributedon the outer surface of each strut 521. Each free-floating end of astrut 521 also includes at least one irrigation and aspiration port 525.Suction can be applied through these ports so as to bring the targetedtissue in closer physical proximity to the electrodes 522. Theirrigation and aspiration ports 525 can also be used to administercooling fluids in such a way as to minimize thermal damage. Drugs,bulking agents and other flowable substances can be infused through theirrigation and aspiration ports 525.

The Control Assembly 530

The control assembly 530 includes a visualization port 531, an apparatusport 532, an electrical energy port 533, an electrode selection andcontrol switch 534, one or more irrigation and aspiration control ports535, a therapeutic energy port 536 and a handle 537.

The visualization port 531 can be coupled to visualization apparatus,such as a fiber optic device, a fluoroscopic device, an anoscope, alaparoscope, an endoscope or other type of catheter.

The apparatus port 532 can be coupled to other medical devices that maybe useful during treatment such as a pH meter, a pressure monitor, drugadministration apparatus, or other device used to monitor or treat thepatient.

In a preferred embodiment, devices coupled to both the visualizationport 531 and the apparatus ports 532 are controlled from a locationoutside the body, such as by an instrument in an operating room or anexternal device for manipulating the inserted catheter 510.

In an alternative embodiment the apparatus port 532 may be coupled todevices that are implanted or inserted into the body during a medicalprocedure. For example, the apparatus port 532 may be coupled to aprogrammed AICD (artificial implanted cardiac defibrillator), aprogrammed glandular substitute (such as an artificial pancreas) orother device for use during surgery or other medical procedures.

The electrical energy port 533 includes a conductive element such as anelectrical adapter that can be coupled to a source of alternating ordirect current such as a wall socket, battery or generator.

The electrode selection and control switch 534 includes an element thatis disposed to select and activate individual electrodes 522.

The irrigation and aspiration control ports 535 can be coupled to a pumpor other apparatus to deliver fluid through the irrigation andaspiration ports 525 or electrodes 522 or to apply suction through theset of irrigation and aspiration ports 525.

The therapeutic energy port 536 includes a receptor port for coupling toa source of any of the following types of therapeutic energy:

-   -   radiofrequency (RF) energy, such as RF in about the 300        kilohertz to 500 kilohertz range;    -   chemical treatments, such as acids, antibiotics, enzymes,        radioactive tracers or other bioactive substances;    -   infrared energy, such as from an infrared laser or diode laser;    -   microwave energy, such as electromagnetic energy in about the        915 megahertz or 2.45 gigahertz range;    -   sonic energy, including ultrasound;    -   photodynamic therapy (PDT);    -   non-infrared laser energy; and    -   cryothermia

The handle 537 is disposed for manipulated by medical or veterinarypersonnel and can be shaped for being held in the hand. Thevisualization port 531, the apparatus port 532, the electrical energyport 533, the electrode selection and control switch 534 and the one ormore irrigation and aspiration control ports 535 and the therapeuticenergy port 536 are all mounted in the handle 537 to allow for easyoperation.

The Shielding Element 540

The shielding element 540 lies on the proximal side of treatment element520 and is disposed to isolate the treatment area. It can also helpposition the catheter 510 in the body. For example, in a preferredembodiment in which the catheter 510 is inserted into the urethra, theshielding element 540 can prevent the catheter 510 from being insertedfurther into the urethra canal and prevent substances used in treatmentfrom escaping. In an alternative embodiment, the shielding element 540is optional.

FIG. 6 is a process flow drawing of a method for treatment of femaleurinary incontinence using a third device. Although the method 600 isdescribed serially, the steps of the method 600 can be performed byseparate elements in conjunction or in parallel, whether asynchronously,in a pipelined manner, or otherwise. There is no particular requirementthat the method 600 be performed in the same order in which thisdescription lists the steps, except where so indicated.

A method 600 is performed by a system 500 including a catheter 510, atreatment element 520 and a control assembly 530.

At a flow point 600, electrical energy port 533 is coupled to a sourceof electrical energy. The patient has voided and is positioned on atreatment table, in an appropriate position such as horizontal,jackknife or lithotomy. Due to the potential for inducing pain, the areasurrounding the urinary meatus may be pretreated with a topicalanesthetic before insertion of the catheter 510; depending upon thecircumstances, a muscle relaxant or short term tranquilizer may beindicated. The position of the patient and choice of pharmaceuticalagents to be used are responsive to judgments by medical personnel.

At a step 601, the patient's external genitalia and surrounding anatomyare cleansed with an appropriate agent such as BETADINE, or benzalkoniumchloride.

At a step 602, the visualization port 531 is coupled to the appropriatevisualization apparatus, such as a fluoroscope, an endoscope, a displayscreen or other visualization device. The choice of visualizationapparatus is responsive to judgments by medical personnel.

At a step 603, the apparatus port 532 is coupled to an external medicaldevice such as a pH meter, a pressure gauge, or other medical equipment.The choice of apparatus is responsive to judgments by medical personnel.

At a step 604, the therapeutic energy port 535 is coupled to a source ofany of the aforementioned types of therapeutic energy.

In a step 605, suction, inflation or fluid in fusion apparatus iscoupled to the irrigation and aspiration control ports 535 so thatcooling fluids and pharmacological agents may be administered.

At a step 606, the tapered tip 513 is lubricated and introduced into theurethral meatus in an upward and backward direction, in much the sameway a Foley catheter is introduced. The choice of lubricant isresponsive to judgments by medical personnel. In a preferred embodiment,the treatment element 520 is completely closed to facilitate insertion.

In a step 607, the catheter 510 is threaded through the urethra untilthe treatment element 520 has completely passed the bladder neck and isentirely in the bladder. An introducer sheath 513 or guide tube 514 mayalso be used to facilitate insertion.

In a step 608, the position of the catheter 510 is checked usingvisualization apparatus coupled to the visualization port 531. Thisapparatus can be continually monitored by medical professionalsthroughout the procedure.

In a step 609, the irrigation and aspiration control port 535 ismanipulated so as to exude a cooling fluid. In a preferred embodiment,the cooling fluid may include sterile water, saline or glycerin. Thiscooling fluid lowers the relative temperature of the targeted tissuesthat are in physical and prevents collateral thermal damage. Inalternative embodiments, other devices may be coupled to the apparatusport 532 to chill the cooling fluid or cause sonic cooling, gasexpansion, magnetic cooling or others cooling methodologies. The choiceof cooling fluid or methodology is responsive to judgments by medicalpersonnel.

In a step 610, tension is applied to the translation member 512 to causeextension of the struts 522. Extension of the struts 522 brings theelectrodes 522 into physical proximity with the walls of the bladder.

In a step 611, the irrigation and aspiration control ports 535 aremanipulated so as to apply suction through the irrigation and aspirationports 525 and bring the walls of the bladder in even closer proximity tothe treatment element 520.

In a step 612, electrodes 522 are selected using the electrode selectionand control switch 534. In a preferred embodiment, all electrodes areselected. In another embodiment, individual electrodes may be deployed.

In a step 613, individual nerves within the bladder are identified usingsensors 526. This step is optional.

In a step 614, the therapeutic energy port 536 is manipulated so as tocause a release of energy from the electrodes 522. The duration andfrequency of energy are responsive to judgments by medical personnel.This release of energy creates a pattern of lesions in the mucosaland/or sub-mucosal tissues of the bladder or portions thereof. Theaffected area shrinks and is relatively strengthened, so as to betterretain urine.

In a step 615, the therapeutic energy port 536 is manipulated so as tocause a release of energy from the electrodes 522 that is directed atthe nerves that were identified in step 613. Manipulation and modulationof these nerves may directly or indirectly affect incontinence relatedto an uncontrolled urge to urinate. This step is optional.

In a step 616, bulking agents such as organic microspheres, collagens,silicone, PVC and other organic breathable and unbreathable polymers areexuded from selected electrodes 522 into tissues near the base of thebladder. The type of microspheres and bulking substances and thelocations where they are exuded are responsive to judgment by medicalpersonnel. These bulking agents can be used to strengthen thesestructures so as to prevent incontinence caused by stress. This step isoptional.

In a step 617, pharmaceutical agents may be locally administered bymanipulating the irrigation and aspiration control ports 535. Theseagents may help include lubricants, anesthetics, anti-spasmodics,anti-inflammatories, antibiotics or other agents as deemed appropriateby the judgment of medical personnel. This step may occur any time priorto withdrawal of the catheter 510, either to pre-treat tissue orpost-treat tissues.

In a step 618, the irrigation and aspiration control port 535 ismanipulated so as to reverse the flow of cooling liquid.

In a step 619, tension is applied to the translation member 512 to causethe umbrella like struts 521 to collapse and close around the catheter510.

In a step 620, the catheter 510 is withdrawn from the urethra.

GENERALITY OF THE INVENTION

The invention has substantial generality of application to variousfields for biopsy or treatment of medical conditions. These variousfields include, one or more of, or a combination of, any of thefollowing (or any related fields):

As noted above, the invention can be used in any area of the body,including the biologic systems and locations noted herein. The inventioncan be used for the general purpose of reducing, plumping, or reshapingbody structures, tissues, or regions of the body otherwise empty (orfilled with biologic substances).

For examples, the invention can be used in one or more of, or somecombination of, the following:

-   -   in the head and neck, such as the cheeks, eyes, sinuses, middle        ear, nostrils, inner ear, Eustachian tubes, pharynx, larynx, or        other structures;    -   for the purpose of reforming damaged body parts, for the purpose        of reshaping misshapen body parts, dilating occluded tissues, or        for cosmetic affects; and    -   for the purpose of replacing the volume filled by body parts        that are missing, whether due to congenital defect, infection,        or surgery.

ALTERNATIVE EMBODIMENTS

Although preferred embodiments are disclosed herein, many variations arepossible which remain within the concept, scope, and spirit of theinvention, and these variations would become clear to those skilled inthe art after perusal of this application.

1. A method comprising steps of: inserting a catheter into a body at aselected location; positioning one or more electrodes and irrigation andaspiration ports in said body so that one or more electrodes areproximate to a surface of the tissue to be treated; aspirating saidtissue so as to conform it to the at least one electrode; allowingpassage of a flowable substance to said surface; delivering any ofenergy and chemical treatment from one or more electrodes proximate tosaid one surface; and selecting and activating said electrodes by anoperator, individually and as sequences of electrodes disposed inarrays.
 2. A method as in claim 1, including a step of inserting saidcatheter either laparoscopically or manually into said selectedlocation.
 3. A method as in claim 1, wherein said applied energyincludes one or more of a group consisting of: Rf energy at about 300 toabout 500 kilohertz; photodynamic therapy; microwave energy in about the915 megahertz to 2.45 gigahertz range; sonic energy; and infrared; andwherein said chemical treatment includes one or more of a groupconsisting of: enzymes; acid-base reactions; radioactive tracers; andchemical desiccants.
 4. A method as in claim 1, including a step ofproviding a liquid-tight seal by means of a shielding element in aregion proximate to said selected location.
 5. A method as in claim 4,wherein said shielding element comprises any of a group consisting of aninflatable balloon, a sponge and a polymer shield.
 6. A method as inclaim 1, including a step of delivering sensor output from said selectedlocation to a location outside said body.
 7. A method as in claim 1,wherein said step of delivering sensor output includes a step ofproviding at least one of a group consisting of: an electromagneticimpedance sensor; an optical sensor; a conductivity sensor; a pH sensor;a pressure sensor; a temperature sensor; and a sensor that detectnervous activity.
 8. A method as in claim 1, including a step ofregulating a temperature proximate to said selected location.
 9. Amethod as in claim 8, wherein said step of regulating uses a chilledliquid disposed proximate to said one surface.
 10. A method as in claim8, wherein said step of regulating relies upon the volume of the saidchilled liquid to shape said balloon so as to occupy the interior ofsaid body cavity and bring said at least one electrode into proximitywith said body cavity.
 11. A method as in claim 10, including a step ofmanipulating a pullwire to alter the shape of said balloon to bring saidat least one electrode into proximity with said body cavity.
 12. Amethod as in claim 1, including a step of manipulating a pullwire toalter the position of a set of umbrella-like struts to bring said atleast one electrode into proximity with said body cavity.
 13. A methodas in claim 1, including a step of delivering a flowable substance tosaid selected location, said flowable substance being responsive to anyof a group consisting of said energy and chemical treatment.
 14. Amethod as in claim 13, including a step of eliciting a selected responseto any of said group consisting of energy and chemical treatment.
 15. Amethod as in claim 14, said step of eliciting said selected responseincluding any of the steps of: receiving any of a group consisting ofsaid energy and chemical treatment for any of a group consisting ofablation, coating, expansion, plumping, shaping and shrinking tissue;mapping position of nerves and stimulating them; shrinking a sphincterby creating a pattern of thermal lesions; reducing compliance orstiffness in a tissue; reducing strain on a tissue by changing therelative geometry thereof; and delivering a drug.
 16. A method as inclaim 1, including a step of controlling application of said energyand/or chemical treatment within an interior region of a body cavity.17. A method as in claim 16, wherein said step of controllingapplication includes a step of distributing said energy and/or chemicaltreatment uniformly in said interior region.
 18. A method as in claim 1,including a step of delivering a flowable substance from outside thebody to said selected location.
 19. A method as in claim 18, whereinsaid flowable substance includes at least one of a group consisting of:a drug, a gas, a radioisotope, an analgesic, anantibiotic, anantiinflammatory, an anti-spasmodic and a bulking agent.
 20. A method asin claim 19, wherein said bulking agent comprises any of a groupconsisting of: microbeads suspended in a delivery vehicle; glycerin; andsaline.
 21. A method as in claim 1, wherein said selected location isdisposed within a human being or other mammal; and said energy and/orchemical treatment is delivered proximate to said selected location toany of a group consisting of a sphincter, muscle tissue, and nervetissue.
 22. A method as in claim 21, wherein said sphincter or tissue isproximate to any of a group consisting of a bladder, esophagus, uterus,fallopian tube, vas deferens, sinus cavity, aorta, larynx and pharynx.23. A method as in claim 21, wherein the sphincter or tissue includesany of a group consisting of: the trigone area of a bladder; thedetrusor muscles of any of a group consisting of a bladder, the bladderneck, and the urethra and nerves that inform any of a group consistingof said trigone area, said detrusor muscles, said bladder neck and saidurethra.